Sony stock price spikes up 9% after Microsoft's Xbox One presentation
google.com
google.com
http://www.guardian.co.uk/business/2013/apr/04/japan-quantit...
http://www.independent.co.uk/voices/comment/japan-has-finall...
etc. This is just part of the effect of dumping a trillion into the market.
EDIT: Not to say the xbox event is completely unrelated, but the real reason behind the gains is big money being pushed into the market. More than likely money earmarked for Sony was held off a day or two for news of MS releasing a flying console that could brush your teeth - but barring anything truly radical, the money was always going to go into Sony's stocks.
However, looking at other Japanese stocks, I'm only finding one Japanese stock with similar behavior today to Sony's: Panasonic [1].
I'm not a fan of asserting that correlation equals causation, but the timing of the stock behavior is one hell of a coincidence. But I admit that I could be wrong.
http://www.bloomberg.com/news/2013-05-21/sony-jumps-on-repor...
That was super hard (typing 'Sony' into Google News). If you're looking at stock prices by yourself and trying to draw your own conclusions you'll probably end up looking like an idiot.
http://dealbook.nytimes.com/2013/05/14/hedge-fund-manager-da...
I really doubt it has much to do with a Microsoft presentation.
And as noted elsewhere, the price started moving only 5 minutes into the presentation, way before anything of substance was announced.
Anyway, take a look at this. http://www.bloomberg.com/news/2013-05-21/sony-jumps-on-repor...
There's no way a stock movement of that size had anything to do with the Xbox.
Be interesting to see if MS manages any level of 'course correction' at E3 or if people who aren't hardcore sports/CoD/etc gamers simply aren't the target market now.
[1] http://en.wikipedia.org/wiki/American_depositary_receipt
- guy who works on Market-Moving News at Bloomberg
Maybe since PlayStation dedicates itself to new IPs and games that are not FPSs it's stock increased when people saw Xbox turning into a generic dell desktop / cable box.